7284e1c09d51000c4fdfcd4aba7257c53af076256bf7839d0f886ad8da58f4a7

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 02:33

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General

Target

2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe
Size

62KB
MD5

a65d109b8677468bb335cd79673475b3
SHA1

ece8445bdb409fd15042537eed25ad99ededa2b3
SHA256

7284e1c09d51000c4fdfcd4aba7257c53af076256bf7839d0f886ad8da58f4a7
SHA512

b285003822b60b25dae2358d58178ddcf11c0322c63eeb83ad4d8b5cadfb5371b3b8445df03c7ed54b5a6b5c80db9f9575a4c840249fa75a24b05573dd650baf
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF2994:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001225a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001225a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1680	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2056	2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2056	2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe
1680	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 1680	2056	2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe	28
PID 2056 wrote to memory of 1680	2056	2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe	28
PID 2056 wrote to memory of 1680	2056	2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe	28
PID 2056 wrote to memory of 1680	2056	2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_a65d109b8677468bb335cd79673475b3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
62KB

MD5
ec3628b469e3868da9294828b959357f

SHA1
6b9317d9623041377668df65fd520cdafb1addd9

SHA256
f2f35c7a3f99449df1dfa27a5654c289509d5f700ebef84aa947653efb52ac0f

SHA512
b5546df8b270d30068d86d439970687b41c59d051ef9d0d496b0e3b93b4bacd744700f0cb648e07ce771f2c66d77473bfcea996395405581d2cfee129668034c

Download Submit
memory/1680-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2056-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2056-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2056-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download